Christian olsek



UNITED VSTATES PATENT OFFICE.

i CHRISTIAN OLSEN, OF JOPLIN, MISSOURI.

WH EEL-HUB.

SPECIFICATION forming part of Letters Patent No. 242,683, dated June '7,1881.

Application tiled March 7, 188i.

To all whom t may concern:

Be it known that I, CHRISTIAN OLSEN, a citizen of the United States,resident at Joplin, in the county of Jasper and State ot' Missouri, haveinvented certain new and useful Improvements in Lock- Spoke Wheel Hubs;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theartto which it appertains to make anduse the same, reference being hadto the accompanying drawings, and to letters or iigures of referencemarked thereon, which form a part of this specification.

Figure l is a representation of a vertical section, and Fig. 2 is adetailview.

This invention relates to improvements in wheels, more especially to theconstruction of the spoke-tenons and mortises in the hub to receivethem. Its object is the production of a wheel the spokes of which willnot jump out of the hub.

The'invention consists of a hub having the shaped mortises hereinafterdescribed, in combination with spokes having tenons to be inserted insaid mortises, all as set forth, and particularly pointed out in theclaim.

In thc annexed drawings, A is one of the spokes, having tenon B beyondthe shoulders a a. One face, b, of this tenon runs down perpendicular atz, then turns in obliquely at y, and down perpendicular at x to thepoint a. The other face, b', runs down perpendicular at z', parallel toz, then turns out obliquel y at y at a different angle from I, and runsin on a bevel at w to the point o. This forms a tenon straight at theshoulders, having an angle at the middle, and a lower portion whoseedges t'orm an angle.

The hub C, which is made solid, has mortises c, similar in shape to theupper and middle portionsfof the tenons, made circumferen- (No model.)

tially therein at its middle. The partitions which separate thesemortises c stop short of the center of the hub, asv shown. The spokesare `driven with their tenons into these inortises. The tenons rest withtheir upper and middle portions in the mortises, their lower portionscoming together at the center, the bend of one fitting snugly againsttheI perpendicular face of the other. It will thus be seen that one ofthe oblique shoulders of one spoke comes in underthat of its nextneighbor, and thus any tendency to jump one spoke is resisted by thenext, and the transferred stra-in on this by the next, so that theshoulders form an interlocked chain around the hub.

The tenon of a spoke has been made alter nately concave-convex orserpentine, so that the hold or bearings of the two sides have beendiagonally rather than transversely opposite to each other; but in thatinstance the inner ends ot' the tenons did not come in contact, as in mycase, and that shape is not claimed herein 5 besides, the partitionsbetween the mortises extended to the bore of the huh.

l claim- A spoke the tenonof which has a straight upper portion, obliquemiddle, and a lower portion, the faces of which form an angle, incombination with a hub the mortises of which have a shape to suit theupper and middle portions ofthe tenen, and run together, so that thespokes project through the mortises and have a solid bearing againsteach other at. their lower ends, substantially as and for the purposesset forth.

In testimony whereof I aflix my signature in presence of two witnesses.

CHRISTIAN OLSEN.

Witnesses WILLIAM V. WHITE,

ANTHoNY W. STRINGER.

